From 3fa3c9d663a2f6a1bb4debc8f74457fe3cf4806f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Mon, 20 Jan 2020 11:31:16 +0100
Subject: [PATCH] Ensure to always store and compare sorted multiselection
 value

issue9001
review268761002
---
 tryton/gui/window/view_form/model/field.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tryton/gui/window/view_form/model/field.py b/tryton/gui/window/view_form/model/field.py
index b27b2b17f6..2206e9b166 100644
--- a/tryton/gui/window/view_form/model/field.py
+++ b/tryton/gui/window/view_form/model/field.py
@@ -229,7 +229,12 @@ class MultiSelectionField(Field):
     _default = None
 
     def get(self, record):
-        return super().get(record) or self._default
+        value = super().get(record)
+        if not value:
+            value = self._default
+        else:
+            value.sort()
+        return value
 
     def get_eval(self, record):
         value = super().get_eval(record)
@@ -237,6 +242,11 @@ class MultiSelectionField(Field):
             value = []
         return value
 
+    def set_client(self, record, value, force_change=False):
+        if value:
+            value = sorted(value)
+        super().set_client(record, value, force_change=force_change)
+
 
 class DateTimeField(Field):